#include <bits/stdc++.h>
 
using namespace std;
 
#define all(x) begin(x), end(x)
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
const int maxn = 2555, sigma = 4;
int dp[maxn][maxn][sigma];
 
int get(char c) {
	return c == 'R' ? 0 : c == 'G' ? 1 : 2;
}
 
class StringTransformation {
public:
	string getResult(string s, string t) {
		int n = s.size();
		int m = t.size();
		dp[0][0][0] = dp[0][0][1] = dp[0][0][2] = dp[0][0][3] = 1;
		for(int i = 1; i <= n; i++) {
			for(int j = 1; j <= m; j++) {
				if(s[i - 1] == t[j - 1]) {
					int c = get(s[i - 1]);
					dp[i][j][3] = dp[i - 1][j - 1][c];
				}
				for(int tc = 0; tc <= 2; tc++) {
					dp[i][j][tc] = dp[i][j][3];
					if(i >= 3 && get(s[i - 3]) != tc) {
						dp[i][j][tc] |= dp[i - 2][j][tc];
					}
				}
			}
		}
		return dp[n][m][3] ? "YES" : "NO";
	}
} me;

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